Pseudo format camera

ABSTRACT

A photographic camera capable of selecting a real focal length photographic mode for printing a normal range of a frame of film and a plurality of pseudo focal length photographic modes, each being different in pseudo focal length from each other, for printing a range narrower than the real focal length photographic mode. A display panel is provided on the camera body to display the photographic mode selected and a display panel is provided in a viewfinder to display the photographic range which will be printed on a photographing paper.

This application is a divisional of Application Ser. No. 895,826, filedAug. 12, 1986, now U.S. Pat. No. 4,780,735.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a photographic camera for photographingan object onto a film.

2. Description of the Prior Art

A camera capable of changing over between a real focal lengthphotographing mode or normal photographing mode for photographing a realfocal length photographing range or normal photographing range on a filmand printing said range and a pseudo focal length mode in which a rangenarrower than the real focal length photographing range is indicated andindicated range alone is printed, has already been proposed in JapaneseLaid Open Patent No. 26721/79 and in U.S. Pat. No. 3,490,844.

It is necessary for proper handling of the camera to indicate theselected photographing mode and range printed on the photographing paperbecause the selection of the photographing range is based on theselected mode.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a camera capable ofindicating a selected photographic mode and the printing rangecorresponding to the selected photographing mode with the mark displayedon the outer surface of the camera body and also displayed in theviewfinder.

This and other objects of the invention are achieved by a cameracomprised of a means for selecting a real focal length photographic modein which a normal range of a frame of film will be printed on aphotographing paper and a pseudo focal length photographic mode in whicha range narrower than the normal range of a frame of film will beprinted on a photographing paper, a first means for displaying a markcorresponding to the selected mode on the outer surface of the camera,and a second means for displaying a photographic range which will beprinted on the photographing paper in the view-finder of the camera.

Other objects and features of the invention will become apparent fromthe following description taken in connection with the accompanyingdrawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a camera according to an embodiment ofthe present invention;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a sectional view showing a construction of a finder opticalsystem and a range finding optical system both used in the camera;

FIG. 5 is a schematic view showing printing range in the pseudo focallength photographing mode;

FIG. 6 is a schematic view showing a display in the camera finder field;

FIG. 7 is a sectional view showing a relation between a photographingrange of a photographing lens and a light measuring range of a lightmeasuring optical system both used in the camera;

FIGS. 8 and 9 illustrate display modes of a liquid crystal display usedin the camera;

FIG. 10 illustrates the camera with a back cover open, viewed from theback;

FIG. 11 is an enlarged front view of a code printing unit used in thecamera, viewed from the back;

FIG. 12 is a longitudinal sectional view of the code printing unit;

FIG. 13 is a partially enlarged transverse sectional view of the codeprinting unit;

FIG. 14 illustrates a film on which are printed the code signals, viewedfrom the back;

FIG. 15 illustrates code signals printed on the film;

FIG. 16 is an electrical circuit diagram of the camera;

FIG. 17 is a block diagram showing a construction of an automatic focusadjusting circuit used in the camera;

FIG. 18 is a graph showing a relation between aperture and exposure timeand also showing a flash emission timing;

FIG. 19 is a graph showing a relation between aperture and exposure timeat the time of change-over to flash photography;

FIGS. 20A, 20B, 20C and 21 are flow charts showing operation of acontrolling microcomputer used in the camera;

FIG. 22 is a flow chart showing details of step S8 therein;

FIG. 23 is a schematic view showing operation thereof in a typicalmanner;

FIGS. 24, 25 and 26 are each a flow chart showing operation of amicrocomputer for display;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

An embodiment of the present invention will be described in detailhereinunder with reference to the accompanying drawings.

In FIG. 1, which is a perspective view of a camera embodying the presentinvention, the reference numeral 2 denotes a camera body; numeral 4denotes a shutter release button; numeral 6 denotes a date selectionswitch for selecting whether a date is to be printed or not on aphotographic paper during the printing operation; numeral 8 denotes atrimming setting button for setting whether pseudo focal lengthphotographing mode is set or not and its printing size; and LCD₁represents a liquid crystal display for displaying various data relatedto photographing. The shutter release button 4, date selection switch 6and trimming setting button 8 are disposed on an upper surface of thecamera body 2 as shown in the top view of FIG. 2. The date selectionswitch 6 is a slide type; in its position shown, the date is printed,while when it is slid in the X direction in the figure, the date is nolonger printed. Either of the real focal length photographing mode ornormal photographing mode and the pseudo focal length photographingmode, and the ratio of trimming in the latter are determined accordingto the number of depressions of the button 8. As will be describedlater, when a film having a sensitivity below ISO 400 is loaded, thetrimming setting button 8 is not depressed at all, under which conditionthe pseudo focal length photographing mode is not selected and the wholeof a real focal length photographing range or normal photographing rangeis printed. When the trimming setting button 8 is depressed once, atrimming "1" mode is obtained in which a little narrower photographingrange than the real focal length photographing range is printed.Depressing it twice affords a trimming "2" mode of a still narrowerprinting range, and depressing it three times results in a trimming "3"mode of the narrowest printing range. If it is further depressed, therewill be obtained a close-up mode as will be described later. A stillfurther depression of the trimming setting button 8 will result inreturn to the real focal length photographing mode. Details on thisrespect will be set forth later.

In FIG. 1, moreover, the numeral 12 denotes a flash unit portion;numeral 14 denotes a finder window; numeral 16 denotes a finderilluminating window; and numerals 18a and 18b represent a pair of rangefinder windows. These are arranged on a front face of the camera body 2as shown in the front view of FIG. 3. Numerals 20 and 22 denote aphotographing lens and a light measuring window for automatic exposurecontrol.

FIG. 4 is a sectional view showing a finder optical system and a rangefinding optical system both used in such camera. In FIG. 4, the finderoptical system is constituted by an inverted Galilean type opticalsystem comprising an objective lens L₁ having a negative refractivepower and an eyepiece lens L₂ having a positive refractive power, bothdisposed in the interior of the finder window. Between the objectivelens L₁ and the eyepiece lens L₂ is disposed a half mirror H wherebylight which has been reflected by a mirror M after passing through aliquid crystal display LCD₂ disposed behind the finder lighting window16 is conducted to the finder. On the other hand, behind the rangefinder window 18a is disposed a light emitting diode 24 for rangefinding to project an infrared light beam to an object through aprojection lens L₃. Light reflected from the object is detected by alight detecting element 26 for range finding through a light receivinglens L₄ disposed behind the range finder window 18b, and from the stateof light detected the distance to the object is determined. This rangefinding principle is already well known, so its details are hereomitted.

The printing range in the selection of pseudo focal length photographingmode will now be explained with reference to FIG. 5, which is a frontview showing one exposure plane of an ordinary 35 mm film. In the realfocal length photographing mode not selecting the pseudo focal lengthphotographing mode, the whole range of 24 mm long by 36 mm wide isprinted on a printing paper. In the trimming "1" mode, the rangeindicated by A₁ is printed; in the trimming "2" mode, the rangeindicated by A₂ is printed; and in the trimming "3" mode, the rangeindicated by A₃ is printed. The ratios of the print ranges on the filmin the trimming "1", "2" and "3" modes relative to the real focal lengthphotographing mode are set as approximtely 1:1/√2:1/2:1/3. Therefore, inthe case where frames after photographing in those modes are enlarged tothe same size, there are printed the same ranges as those photographedby lenses of the pseudo focal lengths shown in Table 1 below, provided afocal length, f, of the photographing lens is assumed to be 35 mm.

                  TABLE 1                                                         ______________________________________                                        Photographing Mode                                                                              Focal Length                                                ______________________________________                                        Normal Mode       35         mm                                               Trimming "1" Mode 50         mm                                               Trimming "2" Mode 70         mm                                               Trimming "3" Mode 105        mm                                               ______________________________________                                    

Referring now to FIG. 6, there are illustrated display in the finderfield effected by means of a liquid crystal display LCD₂. In the liquidcrystal display LCD₂ there are provided four kinds of frames F₀, F₁, F₂and F₃ each corresponding to the printing ranges of the real focallength photographing mode and trimming "1", "2" and "3" modesrespectively. Any one of these frames is displayed selectively accordingto a set state of the trimming setting button 8. More particularly, inthe finder field, the frame F₀ is displayed in the real focal lengthphotographing mode; F₁ is displayed in the trimming "1" mode; F₂ isdisplayed in the trimming "2" mode; and F₃ displayed is in the trimming"3" mode and the close-up mode.

Now, with reference to FIG. 7, the relation between the rangephotographed by a photographic lens 20 and printed, and a lightmeasuring range of a light measuring system disposed in the interior ofthe light measuring window 22, will be explained. In FIG. 7, in the realfocal length photographing mode, the range of B₁ is photographed by thephotographic lens 20 and printed. In the trimming "3" mode of thesmallest printing range, the range of B₂ is printed. It is assumed thatthe angle of the field of view of the photographic lens 20 relative tothe smallest printing range B₂ is α. On the other hand, behind the lightmeasuring window 22 is disposed a light measuring optical systemcomprising a light measuring lens L₅, a filter F and a light receivingelement 28. If its angle of the field of view is β, the relation thereofto α is α≧β. Under this construction, a light measuring range is alwayspositioned within the range to be printed, whereby a light measuringinformation always corresponding to the range to be printed can beobtained accurately even if the pseudo focal length photographing modeis set.

Referring now to FIG. 8, there are illustrated display modes of theliquid crystal display LCD₁ shown in FIG. 1. Although all the displayelements are indicated in FIG. 8, this does not actually occur. Themarks M₁, M₂ and M₃ denote display elements which represent set modes ofphotographing of the camera. In the real focal length photographingmode, only the display element M₁ is indicated. When any one of thetrimming modes "1", "2" and "3" is selected by operation of the trimmingsetting button 8, only the display element M₂ is indicated. On the otherhand, upon selection of the close-up mode, only the display element M₃is indicated.

The marks D₁, D₂, D₃, D₄ and D₅ represent display elements forindicating printing ranges according to photographing modes. In the realfocal length photographing mode or normal photographing mode, thedisplay element D₁ which shows the broadest printing range is indicated.In the case of the pseudo focal length photographing mode, any one ofthe display elements D₂, D₃ and D₄ is indicated selectively according tothe trimming "1", "2" or "3" mode selected, together with the displayelement D₁. For example, in the trimming "1" mode which is of thebroadest printing range in the pseudo focal length photographing mode,the display elements D₁ and D₂ are indicated; in the trimming "2" mode,the display elements D₁ and D₃ are indicated; and in the trimming "3"mode, the display elements D₁ and D₄ are indicated. Further, in theclose-up photographing mode, the display element D₅ is indicated.

The mark DA represents a display element for indicating date dataprinted. The date data is not printed when its printing mode is notselected. The display element DA may be so constructed as to indicate adate even where printing of date data is not selected. The mark FCrepresents a display element for indicating the number of framesphotographed. Further, the mark FE represents a display element forindicating a loaded state of the film. In this way, variousphotographing modes, printed date, the number of frames photographed,and the film loaded state, are indicated by the liquid crystal displayLCD₁.

For example, FIG. 9 shows a display mode of the liquid crystal displayLCD₁ in which the trimming "2" mode has been selected whereby thedisplay elements M₂, D₁ and D₃ are indicated; data corresponding to"July 25, 1985" is printed as date data; "24" is indicated as the numberof frames photographed; and a normal loaded state of the film isindicted.

Referring now to FIG. 10, there is illustrated the camera body 2 asviewed from the back, with a back lid thereof open. In FIG. 10, a spoolchamber 2a for housing a spool 28 therein is provided in the camera body2 in a right-hand position in the figure, while in a left-hand positionin the figure there is provided a patrone chamber 2b for loading thereinof a patrone. Consequently, the film when wound up is moved from theleft to the right in the figure. Numeral 2c denotes a frame provided ina position corresponding to the film, and at the rightmost end thereofis disposed a code printing unit 30 for printing various photographicdata as codes in the film.

As shown in the enlarged view of FIG. 11, the code printing unit 30 hasseventeen optical fibers 30a one ends of which are arrangedlongitudinally in the figure in an opposed relation to the emulsionsurface of the film. The other ends of these many optical fibers 30a areopposed to seventeen light emitting diodes 32a which are fixed to alight emitting diode substrate 32, as shown in FIG. 12 which is anenlarged sectional view of the code printing unit 30.

FIG. 13 is an enlarged transverse sectional view of the code printingunit 30 and its vicinity, in which the mark FI represents a film loadedand wound up. The film FI is held in a predetermined position of theframe 2c under pressure by means of a pressure plate 40 which is givenan appropriate pressure by a pressure plate spring 38, the spring 38being fixed with pin 36 to a back lid 34 of the camera. The codeprinting unit 30 is fixed to the camera body and a light shielding tube42, and on its face opposed to an optical axis of the photographic lensthere is provided a light shielding plate 44. The light emitting diodes32a are connected through a flexible board PB to a later-described lightemitting diode driving circuit LEDR which functions to control ON-OFF ofthe light emitting diodes 32a, thereby setting a code to be printed onthe film.

Consequently, a code corresponding to each frame is printed on therightmost end of the frame when viewed from the back of the film, asshown in FIG. 14. More specifically, code CO₁ corresponds to frame FI₁,code CO₂ to frame FI₂ and code CO₃ to frame FI₃. The mark CR in FIG. 14represents the range in which code is read; the right-hand side in thefigure is the fore end side of the film, while the left-hand side is thepatrone side.

For each frame of the film, each code is constituted by a 17-bit digitalsignal. Data represented by these bits will now be explained withreference to FIG. 15. FIG. 15 is a rear view of the film photographed,like FIG. 14, in which the right-hand side is the fore end side of thefilm. The 17-bit code comprises, successively from above in the figure,a 3-bit trimming information code Ct, a 1-bit date print permission ornot permission information code Cs, a 4-bit year information code Cy, a4-bit month information code Cm and a 5-bit day information code Cd. Thetrimming information code Ct will now be explained in detail. If thebits of this code Ct are assumed to be b₁, b₂ and b₃ successively fromabove in the figure, the relation between a set photographing conditionand those bit signals is as shown in Table 2 below.

                  TABLE 2                                                         ______________________________________                                        Photographing Mode                                                                           b.sub.1     b.sub.2                                                                             b.sub.3                                      ______________________________________                                        Normal Mode    0           0     0                                            Trimming "1" Mode                                                                            0           0     1                                            Trimming "2" Mode                                                                            0           1     0                                            Trimming "3" Mode                                                                            1           0     0                                            Close-up Mode  1           0     0                                            ______________________________________                                    

In the numeral columns of the above table, "1" indicates that thecorresponding light emitting diode of that bit is turned ON, while "0"indicates turning OFF thereof.

The date print permission or not permission information code Cs becomes"1" in the case of printing a date and "0" when a date is not printed.As to the year information code Cy, month information code Cm and dayinformation code Cd, data of year, month and day are converted to binarydigits.

The following description is now provided about the electrical circuitin the camera of this embodiment, using the circuit diagram of FIG. 16.In FIG. 16, the mark SW₁ denotes a light measuring switch which isclosed by the first-stage depression of the shutter release button 4shown in FIG. 1; SW₂ denotes a release switch which is closed bydepression up to the second stage of the button 4; SW₃ denotes a keyswitch which is opened and closed in interlock with the trimming settingbutton 8 shown in FIG. 1; SW₄ denotes a winding switch which is closedin response to shutter release and opened upon completion of the filmwinding; SW₅ denotes a back lid switch which is opened upon closing ofthe back lid 34 of the camera and opened upon opening of the same lid;SW₆ denotes a film sensing switch which is opened when the film isloaded and wound up and is closed when the film is not loaded; SW₇denotes a count switch which is closed at the beginning of the shutterrelease operation and opened upon completion of charge of the shutter;and SW₈ denotes a date print selection switch which is closed when adate printing mode is selected and is opened when date printing mode isnot selected.

The switches SW₁ to SW₄, which are starting switches, are connected toan interruption terminal INT of a controlling microcomputer CMC througha NAND gate NA and also connected directly to input terminals PI₁, PI₂,PI₃ and PI₄ of the controlling microcomputer CMC. Interruption to thecontrolling microcomputer CMC is caused by the positive edge of input tothe interruption terminal INT. The switch SW₅ is connected to an inputterminal of the NAND gate NA through a differential circuit comprising acapacitor C₂ and a resistor R₃. This is for setting the count value ofthe film counter to "0" when the back lid of the camera is opened.Further, the switches SW₅ to SW₇ are connected to input terminals PI₅,PI₆ and PI₈, respectively, of the controlling microcomputer CMC. Theswitches SW₁ to SW₇ are connected to a power terminal E₁ through pull-upresistors, respectively.

The mark E represents a power battery of the camera, having an outputwhich is connected to an input terminal of the controlling microcomputerCMC through a stabilizing circuit comprising a diode D₂ and a capacitorC₃. To the circuits which are liable to cause erroneous action due tothe change in voltage supplied thereto, electric power is fed from thepower terminal E₁ stabilized by the stabilizing circuit, while to theother circuits the electric power is fed directly from the power batteryE.

The mark FL represents a flash circuit including a flash tube for flashphotography and a control circuit for the flash tube, in which a boostercircuit for applying a high voltage to a main capacitor is operated witha signal provided from an output terminal PO₇ of the controllingmicrocomputer CMC, and flashing is started with a signal provided froman output terminal PO₈. Further, when the charging voltage for the maincapacitor reaches a predetermined value, a charge completion signal isfed to the controlling microcomputer CMC through the input terminal PI₇.

The mark MD denotes a motor driving circuit which controls the filmwinding motor M. With a signal provided from an output terminal PO₅ ofthe controlling microcomputer CMC, the motor M is driven to wind up thefilm, and its drive is braked with a signal provided from an outputterminal PO₆.

The mark CAS denotes film sensitivity reading switches which read dataon film sensitivity prestored in the film patrone loaded into the cameraand which are opened or closed according to the read data. The filmsensitivity data as digital data read by each switch CAS is converted toan analog signal by means of a D/A converter (D/A). This analog filmsensitivity signal is fed to a light measuring circuit comprising aphoto diode PD, an operational amplifier OP and a logarithmiccompressing diode D₁, in which it is added to a light measuring signal.The output of this light measuring circuit is therefore a lightmeasuring signal with the film sensitivity signal added thereto. Thissignal is applied to the base of a transistor TR₁ through a buffer B andis subjected to a logarithmic expanding in a logarithmic expandingcircuit comprising the transistor TR₁ and a capacitor C₁. The chargingvoltage for the capacitor C₁ is compared with a predetermined voltage E₂by means of a comparator CN, and when it drops below E₂, a transistorTR₅ becomes non-conducting and a shutter magnet SMG is de-energized toclose the shutter. Transistors TR₂ and TR₃ are controlled by an outputterminal PO₄ of the controlling microcomputer CMC, and they are forcontrolling the timing of the energizing of the shutter magnet SMG andthe logarithmic expanding. Further, a transistor TR₄ is controlled by anoutput terminal PO₃ of the controlling microcomputer CMC, and it is forcharging the capacitor C₁ rapidly to change a maximum aperture value andto change a longest shutter speed according to the photographing modeselected, as will be described later.

The output of the light measuring circuit, which is a light measuringsignal with the film sensitivity signal added thereto, is fed to an A/Dconverter (A/D) and converted to a digital signal, which in turn is fedto the controlling microcomputer CMC through input terminal PIAD.Further, the digital signal according to film sensitivity provided fromeach switch CAS is fed to the controlling microcomputer CMC from inputterminal PIDX of the microcomputer and also fed to a later-describeddisplay microcomputer DMC.

The display microcomputer DMC controls the display of the liquid crystaldisplay LCD₁ on the upper surface of the camera and that of the liquidcrystal display LCD₂ in the finder, and it also controls the codeprinted in the film. It is supplied with the electric power through thepower terminal E₁, and the date print selection switch SW₈ is connectedto an input terminal pi₁ of the display microcomputer DMC. The displaymicrocomputer DMC is constructed so that interruption is caused by asignal applied to an interruption terminal int₁ or int₂ which areconnected to output terminals PO₁₁ and PO₁₂, respectively, of thecontrolling microcomputer CMC. Interruption to the interruption terminalint₁ is caused when changing the display of the liquid crystal displaysLCD₁ and LCD₂, while interruption is caused to the interruption terminalint₂ at the time of printing code on the film.

Further, signals concerning photographing modes are each provided fromthe controlling microcomputer CMC to the display microcomputer DMCthrough output terminal POD and input terminal piD. Moreover, asmentioned above, signals on film sensitivity are each fed to inputterminal piDX. Further, a clock circuit for determining a date to beprinted on the film is incorporated in the display microcomputer DMC.

The display microcomputer DMC controls the liquid crystal display LCD₁on the upper surface of the camera and the liquid crystal display LCD₂in the finder, through a liquid crystal drive circuit LCDR. Therefore,photographing mode signal, date signal, film presence-absence signal,film winding-related signal, and date print permission or not permissionsignal, are transmitted from the display microcomputer DMC to the liquidcrystal drive circuit LCDR, which in turn latches those data to bedisplayed. Further, the display microcomputer DMC turns ON or OFF thelight emitting diodes 32a for code printing, through a light emittingdiode driving circuit LEDR. The light emitting time of each lightemitting diode 32a is varied according to the film sensitivity signalfed to the input terminal piDX.

The mark AF represents an automatic focusing circuit which measures thedistance up to an object automatically and adjusts the focus position ofthe photographing lens according to the results of the measurement. Theautomatic focusing circuit AF, which is supplied with electric powerfrom the power terminal E₁, starts its automatic focusing operation uponreceipt of a signal from output terminal PO₁ of the controllingmicrocomputer CMC. The distance to the object thus detected is fed as a4-bit digital signal to the controlling microcomputer CMC from inputterminal PIAF. Output terminal PO₂ of the microcomputer CMC becomes "H"when the camera is set to the close-up mode, and all the bits of thedistance signal related to the distance to the object are made "H" tolet the distance signal indicate the closest distance forcibly. At thistime, therefore, the photographic lens is set in the closest state. Themark LMG represents a lens stopping magnet which is de-energized uponcoincidence of the distance signal with a signal indicative of theshifting amount of the lens to stop the shifting of the photographinglens.

The RMG represents a release magnet for starting the shifting of thelens. The release magnet RMG is controlled by a signal from outputterminal PO₁₀ of the controlling microcomputer CMC. After energizing fora certain period of time, it is de-energized to disengage thephotographic lens, thereby allowing the shifting of the photographiclens to start.

A more detailed construction of the automatic focusing circuit AF isshown in FIG. 17, in which the mark DD represents a distance detectingcircuit for measuring the distance up to an object, the operation of thecircuit DD being started by a signal from output terminal PO₁ of thecontrolling microcomputer CMC. Its optical system is shown in FIG. 4.The distance to the object detected by the distance detecting circuit DDis output as a 4-bit digital signal, and the signal of each bit are fedto comparator CON through an OR circuit and also applied to thecontrolling microcomputer CMC through input terminal PIAF. To all theother input terminals of the OR circuit are connected the outputterminal PO₂ of the microcomputer CMC. Therefore, when the close-up modeis selected, all the bits of the distance signal fed to the comparatorCON are "H", representing the closest position, independently of theoutput signal from the distance detecting circuit DD.

On the other hand, the mark EC represents an encoder which providespulses according to the shifting amount of the photographic lens. Thepulses provided from the encoder EC are counted by a counter CU which isreset by a signal from the output terminal PO₁ of the controllingmicrocomputer CMC. This count value is compared with the distance signalby means of the comparator CON, which provides an output signal uponcoincidence of both signals to de-energize the lens stop magnet LMG,thereby stopping the shifting of the photographic lens in the positioncorresponding to the distance signal.

In the camera of this embodiment, when a frame is photographed in thepseudo focal length photographing mode, that is, the trimming "1", "2"or "3" mode or the close-up mode, the enlarging ratio of the framebecomes larger in printing if the frame is printed to the same size asthat of a frame photographed in the real focal length photographingmode. Consequently, blur and flare which have not been conspicuous inthe real focal length photographing mode become conspicuous. To avoidthis, in the camera of this embodiment, the maximum aperture value (i.e.maximum F-number) and the longest (maximum) shutter speed are variedaccording to the printing size in the frame. Therefore, if the pseudofocal length photographing mode is selected, the depth of field isextended and the longest shutter speed (the maximum exposure time) islimited for avoiding the blurring of the object image on the film. Here,the larger the maximum aperture value, the shorter the maximum shutterspeed, since the shutter is operated as an aperture diaphragm in thisembodiment. But the present invention is not limited to thisconstruction. It may be constructed so that only the maximum aperturevalue or only the shutter speed limit is changed according to theselected photographing mode.

Table 3 below shows photographing modes as well as maximum aperturevalues (maximum F-number) and lower limit values of the shutter speed inthis embodiment.

                  TABLE 3                                                         ______________________________________                                        Photographing Mode                                                                            Avmax         Tvmin                                           ______________________________________                                        Normal Mode     2.8           1/30                                            Trimming "1" Mode                                                                             2.8           1/30                                            Trimming "2" Mode                                                                             4             1/60                                            Trimming "3" Mode                                                                             5.6           1/250                                           Close-up Mode   16            1/1000                                          ______________________________________                                    

In the above table, "Avmax" and "Tvmin" represent maximum aperture valueand longest limit value of the shutter speed, respectively. This isillustrated in FIG. 18, in which the vertical axis represents aperturevalue and the horizontal axis represents the time counted from theopening of the shutter. In the real focal length photographing mode orthe trimming "1" mode, it is possible to open the aperture and tolengthen the shutter speed up to the combination of aperture value(F-number) 2.8 and shutter speed 1/30, as indicated by A. In thetrimming "3" mode, the aperture can be opened and the shutter speed canbe lengthened up to the combination of aperture value (F-number) 5.6 andshutter speed 1/60, as indicated by B. Further, in the close-up mode,only the combintion of aperture value (F-number) 16 and shutter speed1/1000 can be set. Where an appropriate exposure is not obtained undersuch combinations of limited apertures and shutter speeds, flashing ismade automatically. As shown in the lower time chart of FIG. 18, wherethe combination of aperture value (F-number) 5.6 and shutter speed 1/60causes under-exposure for example in the trimming "2" mode, a signal isissued from the output terminal PO₈ of the controlling microcomputer CMCat a time point T₁ at which the shutter also serving as aperture isopened up to an aperture value (F-number) of 8 calculated in accordancewith the distance signal provided from the automatic focusing circuitAF, whereby flashing is started. And at a time point T₂ at which theshutter is opened up to an aperture value (F-number) of 5.6, a signal isissued from the output terminal PO₄, whereby the shutter closingoperation is started.

In this connection, an exposure value EV for change-over to flashing isalso changed according to the selected photographing mode. Table 4 showsthe relation between photographing modes and exposure values (assumed tobe Evc) for change-over to flashing.

                  TABLE 4                                                         ______________________________________                                                        Exposure Value for                                            Photographing Mode                                                                            Change-over                                                   ______________________________________                                        Normal Mode     Ev 8                                                          Trimming "1" Mode                                                                             Ev 8                                                          Trimming "2" Mode                                                                             Ev 10                                                         Trimming "3" Mode                                                                             Ev 12                                                         Close-up Mode   Ev 18                                                         ______________________________________                                    

If the subject brightness is Bv, film sensitivity Sv, aperture value Avand shutter speed Tv in APEX calculation, the exposure value Ev (or Evc)is defined as follows:

    EV (or Evc)=Bv+Sv=Av+Tv

The relation between aperture value at the time of change-over toflashing and shutter speed value is shown in FIG. 19, in which itsvertical axis represents aperture value and its horizontal axisrepresents shutter speed. In the real focal length photographing modeand the trimming "1" mode, flashing is not made at an exposure value Evof 8 or more as indicated by Da, while in the trimming "2" mode,flashing is not made only at an exposure value Ev of 10 or more like Ea.Further, in the trimming "3" mode, flashing is not made only at anexposure value Ev of 12 or more like Fa, and in the close-up mode,flashing is made only at an exposure value Ev of 18 or more (not shown).This is for minimizing the aperture to make the depth of field large inthe case where the enlarging ratio in printing is large.

The operation of the controlling microcomputer CMC for controlling thecamera of this embodiment will now be explained with reference to FIGS.20A, 20B and 20C which are a flow chart showing operations of thecontrolling microcomputer CMC in the camera of this embodimentillustrated in FIG. 16. In FIG. 20A, circuits are reset upon power ONreset caused by loading of the battery, then in step S0 the input ports,the output ports and memory of the controlling microcomputer CMC are allinitialized. More specifically, all the other output terminals than PO₁₀of the microcomputer CMC are so initialized as to output "L", and thephotographing mode is initialized to the real focal length photographingmode. Then, in Step S1, each port and flag of the controllingmicrocomputer CMC are initialized and in step S2 there is made an issueof "H" signal at the output terminal PO₇ of the same microcomputer,whereby the booster circuit in the flash circuit FL is allowed to startoperation. Then, in step S3, an external interruption to theinterruption terminal INT of the controlling microcomputer CMC ispermitted and in step S4 the microcomputer assumes a state of normalstop.

Then, when an external interruption is caused to the interruptionterminal INT of the controlling microcomputer CMC by any one ofdepression of the shutter release button 4, depression of the trimmingsetting button 8, winding up of the film, and opening or closing of theback lid, other external interruptions are inhibited in step S5 and theprogram advances to step S6. In step S6 ("step" will be omittedhereinafter), an open or closed state of the winding switch SW₄connected to the input terminal PI₄ of the controlling microcomputer CMCis detected. If the switch SW₄ is open (OFF) and the winding of the filmis over, the program advances to S7, in which CX code data on filmsensitivity of the switch CAS is received from the input terminal PIDX.Then in S8, data on photographing mode (trimming size) is received fromthe input terminal PI₃ to which is connected the key switch SW₃interlocked with the trimming setting button 8. The details will bedescribed later.

Then in S9, an open or closed state of the back lid switch SW₅ isdetected from the input terminal PI₅ and if the back lid is open and theback lid switch SW₅ is opened (OFF), the program advances to S10, inwhich the count value of the film counter for counting the number offrames photographed of the film is set to "0". If the back lid is closedand the back lid switch SW₅ is closed (ON) in S9, the program advancesto S11 without passing through S10. In S11, data necessary for displayis transmitted from the controlling microcomputer CMC to the displaymicrocomputer DMC after interruption from the display rewriting outputterminal PO₁₁, whereby display is made by the liquid crystal displaysLCD₁ and LCD₂.

Then in S12, an open or closed state of the light measuring switch SW₁interlocked with the shutter release button 4 is detected from the inputterminal PI₁, and if the switch SW₁ is open (OFF), the program returnsto S1 and the microcomputer CMC enters the normal stop condition of S4.If the light measuring switch SW₁ is closed (ON) at S12, there is made afalling of the signal at the output terminal PO₇ is made "L" to stopboosting by booster circuit in the flash circuit FL in S13. Then, inS14, the automatic focusing circuit AF is operated by a start signalprovided from the output terminal PO₁ of the controlling microcomputerCMC, and in S15 an open or closed state of the release switch SW₂interlocked with the shutter release button 4 is detected from the inputterminal PI₂. If the release switch SW₂ is open (OFF), the programreturns to S12 and the operations from S12 to S15 are repeated forwaiting for closing the release switch SW2 by the depression of shutterrelease button 4 to the second stage. If a closed state of the releaseswitch SW₂ is detected in step S15, the program advances to shutterreleasing operations from S16 as will be described later.

On the other hand, if a closed (ON) condition of the winding switch SW₄is detected in S6, this means that the winding of the film has not beencompleted yet, so the program advances to S38 in FIG. 20B to stopboosting of the flash circuit FL and enters a winding routine from S39.In S39, the motor driving circuit MD is driven by a signal provided fromthe output terminal PO₅ of the controlling microcomputer CMC to startoperation of the film winding motor M, thereby allowing the winding ofthe film to start. Then, in S40, an open or closed state of the windingswitch SW₄ is detected to detect completion of the winding of the film.The motor M is driven until the winding switch SW₄ is opened (OFF) uponcompletion of the film winding. Once opening (OFF) of the winding switchSW₄ is detected in S40, the rotation of the motor M is stopped to stopthe winding of the film in S41, then the program advances to S42.

In S42, an open or closed state of the film sensing switch SW₆ isdetected from the input terminal PI₆ of the controlling microcomputerCMC. If the film is not loaded in the camera and the film sensing switchSW₆ is closed (ON), data necessary for display is transmitted from thecontrolling microcomputer CMC to the display microcomputer DMC in stepS45, then the program returns to S1 and the microcomputer assumes thestate of normal stop in S4. If it is detected in step S42 that the filmhas been wound up and the film sensing switch SW₆ is open in S42, theprogram advances to S43 and an open or closed state of the back lidswitch SW₅ is detected. In S43, if the back lid is open and the back lidswitch SW₅ is closed (ON), the program advances to S45, in which datanecessary for display is transmitted from the controlling microcomputerCMC to the display microcomputer DMC. Then, the program returns to S1and the microcomputer assumes the state of normal stop in S4. If theback lid is closed and the back lid switch SW₅ is open (OFF) in S43, theprogram advances to S44 and the count value of the film counter isincremented by "1", then the program advances to S45, in which datanecessary for display is transmitted from the controlling microcomputerCMC to the display microcomputer DMC. Then, the program returns to S1and the microcomputer assumes the state of normal stop in S4. Under sucha construction, the film counter is prevented from counting up when theback lid of the camera is open or when the film is not loaded in thecamera.

The release routine from S16 will now be explained. In S16, the lightmeasuring signal which takes the film sensitivity into account is fedfrom the A/D converter (A/D) to the controlling microcomputer CMCthrough the input terminal PIAD. This light measuring signal is assumedto be a light measuring data Evm. Then, in S17, an exposure value Evcaccording to the set photographing mode is read from ROM because ofdifferent exposure values Evc for change-over to flashing according tophotographing modes as shown in FIG. 19 of this embodiment. Then, inS18, a comparison is made between the light measuring data Evm and theexposure value Evc for change-over to flash photographing, and ifEvm>Evc, the program advances to S25 as will be described later. On theother hand, if the relation of the two is not Evm>Evc, this meanbs thatthe light measuring data Evm is lower than the exposure value Evc forchange-over to flash photography, so whether the charging of the maincapacitor for flashing in the flash circuit FL has been completed or notis judged from the input terminal PI₇ of the controlling microcomputerCMC in S19. If said charging is over, the program advances to S20 to seta flashing flag indicative of a flash photography. On the other hand, ifthe charging has not been completed yet, the program returns to S1,waiting for the completion of the charing in S4.

In S21, whether the photographing mode is set to the close-up mode ornot is judged, and if the answer is negative, a signal on the distanceto object is fed from the automatic focusing circuit AF to thecontrolling microcomputer CMC through the input terminal PIAF in S23. Onthe other hand, if it is judged in S21 that the photographing mode isset to the close-up mode, the program advances to S22, in which a signalof "H" is transmitted from the output terminal PO₂ of the controllingmicrocomputer CMC to the automatic focusing circuit AF to make thesignal indicative of the distance to object forcibly into a signalcorresponding to the closest distance. Likewise, in step S23, a signalon the distance to object is fed from the automatic focusing circuit AFto the controlling microcomputer CMC through the input terminal PIAF.

In S24, the controlling microcomputer CMC reads from ROM a valuecorresponding to the signal on the distance to object fed from theterminal PIAF and sets it to a flash timing timer provided in thecontrolling microcomputer CMC. This is because in the case of flashphotography an aperture value is determined according to the distance toobject by means of a flashmatic mechanism and a flash timing isdetermined according to the said aperture value as shown in FIG. 18.Then, in S25, the controlling microcomputer CMC reads a value accordingto the photographing mode from ROM and sets it to an exposure limitingtimer. This is because in this embodiment the maximum aperture value andthe longest shutter speed are limited according to photographing modes.

In S26, a printing signal is provided from the output terminal PO₁ ofthe controlling microcomputer CMC and code data are printed outside theframe of the film according to ON-OFF state of the corresponding lightemitting diodes 32a. Then, in S27, the shutter magnet SMG is energizedby the positive edge of a signal from the output terminal PO₄ of thecontrolling microcomputer CMC and the operation of the release magnetRMG is started by the signal from the output terminal PO₁₀, therebycausing shifting of the photographic lens after a certain time. Then, inS28 in FIG. 20C, an open or closed state of the trigger switch SW₇ isdetected from the input terminal PI₈ of the controlling microcomputerCMC, waiting for closing of the same switch. If the trigger switch SW₇is closed (ON) at the beginning of the shutter release operation, theprogram advances to S29, in which integration of the quantity of lightexposed is started. In this connection, the light measuring system inthis embodiment has a sub aperture whose diameter varies according tothe quantity of light passing through the lens shutter, and the chargingof the capacitor C₁ is started upon start of integration of the quantityof light exposed.

In S30, judgment is made as to whether a flashing flag indicative of aflash photography is set or not. If the said flag is set, the programadvances to S31, in which the flash timing timer is started and timerinterruption is permitted, then the program advances to S32. If theflashing flag is not set in S30, the program advances to S32 directly,in which the exposure limiting timer having a preset time valueaccording to an appropriate exposure is started. And in S33 there ismade judgement continuously as to whether this timer overflows or not.Since a lens shutter which serves as both an aperture and a shutter isused in this embodiment, an aperture value and a shutter speed value areset simultaneously by a single exposure limiting timer. However, thecamera may be constructed so that the aperture and the shutter speed arecontrolled separately and hence their combination can be changedvariously.

If an overflow of the exposure limiting timer is detected in S33, theprogram advances to S34, the transistor TR₄ conducts upon the positiveedge of a signal at the output terminal PO₃ of the controllingmicrocomputer CMC, whereby the shutter magnet SMG is deenergizedforcibly to close the shutter serving also as an aperture,, and thusexposure is terminated. After waiting for a complete closing of theshutter for a predetermined period of time, the program returns to thewinding routine which begins with S39.

Referring now to FIG. 21, there is illustrated the timer interruptionroutine mentioned in step S31. Upon timer interruption, timerinterruption is inhibited in S36, then in S37 a flashing signal isissued by the positive edge of a signal from the output terminal PO₈ ofthe controlling microcomputer CMC, whereby flashing is effected and theprogram is returned to the original step.

The operation of step S8 in FIG. 20A will now be explained in moredetail with reference to FIG. 22. In FIG. 22, first in S8-1, an open orclosed state of the trimming key switch SW₃ is detected. If the keyswitch SW₃ is closed (ON), the program advances to S8-2, in which thereis made a single step modification of a trimming mode register, then theprogram advances to S8-3. If the trimming key switch SW₃ is open inS8-1, the program advances to S8-3 without going through S8-2. In S8-3,judgment is made as to whether the sensitivity of the loaded firm fedfrom the switch CAS to the input terminal PIDX is over ISO 1000 or not.If the answer is affirmative, the program advances to S8-4, in whichjudgment is made as to whether the photographing mode is below thetrimming "2" mode or not. If the answer is affirmative, thephotographing mode is changed to the real focal length photographingmode or normal photographing mode in S8-5.

On the other hand, if it is judged in S8-3 that the sensitivity of theloaded film is below ISO 1000, the program advances to S8-6, in whichthere is made judgment as to whether the sensitivity of the said film isabove ISO 400 or not. If the answer is affirmative, the program advancesto S8-7 to judge whether the photographing mode is below the trimming"3" mode or not, and if the answer is affirmative, the photographingmode is returned to the real focal length photographing mode or normalphotographing mode in S8-8. Where the film sensitivity is not above ISO400 in S8-6, and where the photographing mode is not below the trimming"3" mode in S8-7, it is not specially necessary to change thephotographing mode.

Therefore, according to this embodiment, as shown in FIG. 23, when thesensitivity of the loaded film is below ISO 400, the photographing modeis changed at every depression of the trimmming setting button 8, fromnormal photographing mode to trimming "1" mode, from trimming "1" modeto trimming "2" mode, from trimming "2" mode to trimming "3" mode, fromtrimming "3" mode to close-up mode, and from close-up mode to normalphotographing mode. On the other hand, when the film sensitivity isabove ISO 400 and below ISO 1000, if the trimming setting button 8 isdepressed from the trimming "2" mode, the photographing mode returns tothe normal photographing mode and is not set to the trimming "3" modeand the close-up mode. Further, where a high sensitivity film of aboveISO 1000 is used, depression of the trimming setting button 8 from thetrimming "1" mode causes the photographing mode to return to the normalphotographing mode, without being set to the trimming "2" and "3" modesand the close-up mode. This is for the following reason. The higher thesensitivity of film, the more coarse the particles thereof, so thetrimming and close-up photographing modes requiring a large enlargingratio in printing become undesirable as the film sensitivity becomeshigher, so in this embodiment the limit of trimming is made differentaccording to film sensitivities.

The operation of the display microcomputer (DMC) used in this embodimentwill now be explained using the flow charts of FIGS. 24 to 26. First, inS46, all the input ports, the output ports and memory of the displaymicrocomputer DMC are initialized. For example, the clock mechanismincorporated in the display microcomputer DMC is initialized to "Jan. 1,1985", the photographing mode initialized to the real focal lengthphotographing mode and the count value of the film counter initializedto "0". Then, in S47, the stored contents of data necessary for displayand printing to the film are decoded, then in S48 the said data aretransmitted to the liquid crystal driving circuit LCDR, allowing theliquid crystal displays LCD₁ and LCD₂ to display the necessary data. InS49, all interruptions are permitted and in S50 the microcomputer DMCassumes the state of normal stop.

FIG. 25 is a flow chart showing timer interruption to the displaymicrocomputer DMC. Construction is made so that this timer interruptionis caused at every second. Upon timer interruption, a calendarcalculation is performed in S51 on the basis of the clock mechanismincorporated in the display microcomputer DMC, then in S52 thecalculated data is decoded, then in S53 the display date provided to theliquid crystal driving circuit LCDR is changed, and in S54 the programreturns to the original step.

Further, FIG. 26 is a flow chart showing both interruption for rewritingdisplay and interruption for printing code on the film. First, wheninterruption is caused by positive edge of an input signal to theinterruption terminal int₁ of the display microcomputer DMC, the timerinterruption shown in FIG. 25 is inhibited in S55. In the case of timerinterruption after S55, this is stored and the timer interruption isexecuted just after permission thereof. Then, in S56, display data suchas the count value of the film counter and the photographing mode arereceived fom the input terminal piD, then in S57 the thus-input data anddate data are decoded, then in S58 the thus-decoded data are provided tothe liquid crystal driving circuit LCDR to change the display of theliquid crystal displays LCD₁ and LCD₂, and in S59 the timer interruptionis permitted and the program returns to the original step.

On the other hand, when interruption is caused by the positive edge ofan input signal to the interruption terminal int₂ of the displaymicrocomputer DMC, the timer interruption shown in FIG. 25 is inhibitedin S61, and an open or closed state of the date print selection switchSW₈ connected to the input terminal pi₁ is detected in S62. Where thisdate print selection switch SW₈ is open and the printing of the date isnot selected, the program advances to S63, in which data correspondingto the date print inhibiting code is decoded. Then, the program advancesto S65. On the other hand, where the date print selection switching SW₈is closed to select the printing of date in S62, data corresponding tothe date to be printed is decoded and the program advances to S65.

In S65, the sensitivity of the loaded film is read from the inputterminal piDX connected to the switch CAS, then in S66 a code printingtime (i.e. light emission time of the light emitting diode 32a) isdetermined according to the read film sensitivity, and the printing ofcode is started in S67. The printing time thus determined is counted inS68 and the printing of code is terminated in S69, then the programadvances to S59 to permit timer interruption.

In the camera of this embodiment, a date to be printed is recorded inthe film in the form of codes, so even if the film is seen directly, itis difficult to recognize the date. Particularly, in the case of using areversal film which is seldom printed on a photographic paper, even if adate is printed in the form of codes on the film, the date is notuseful. For the use of such a reversal film, a date printing device forprinting a date as a numerical value in a frame of the film may beincorporated in the camera as in the prior art so that when a reversalfilm is used a date is printed as a numerical value in the film by thedate printing device. For discrimination whether the loaded film is anordinary negative film or a reversal film, there may be used data onfilm latitude among the data recorded in the film patrone. Moreparticularly, data on film latitude (e.g. data called "exposure range")is detected from among the film sensitivity data provided from theswitch CAS in this embodiment and where it is judged that the loadedfilm is a reversal film, there may be used a conventional date printingdevice which prints a date as a numerical value in the film.Alternatively, construction may be made so that a date printing deviceis selected manually according to the loaded film.

Further, in the case of a reversal film, printing is usually notperformed, so the camera may be constructed so that the switching to thepseudo focal length photographing mode (trimming "1", "2", "3" mode andclose-up mode) is inhibited upon detection of a loaded reversal film.

In this embodiment, the pseudo focal length photographing mode has threemodes with each of the pseudo focal lengths being different from eachother, namely the trimming "1", "2", "3" modes. And, the maximumaperture value (minimum F-number) and the longest (maximum) shutterspeed are limited and are changed in accordance with the pseudo focallength in the pseudo focal length photographing mode. But the presentinvention is not limited thereto. It may be constructed so that theminimum F value or the maximum shutter speed is changed over accordingto whether the pseudo focal length photographing mode is selected ornot. With such a change of limit value, a warning value such as a camerashake warning may be changed over according to whether the pseudo focallength photographing mode is selected or not. Although this embodimentis constructed so that in the event an appropriate exposure is notobtained even at the maximum shutter speed limit, flashing is doneautomatically, construction may be made so that a light emitting portionof the flashing device is projected from the camera body to urge theuser to use the flashing device.

In a camera capable of automatically controlling its exposure, theaperture value set in aperture priority shutter speed automaticcontrolling mode should be limited according to whether the pseudo focallength photographing mode is selected or not, the aperture valuecalculated in shutter speed priority aperture automatic controlling modeand in programmed exposure controlling mode should be limited accordingthereto.

Further, although the camera of this embodiment is constructed so thatthe aperture and the shutter speed change in a triangular form as shownin FIG. 18, construction may be made so that they change in atrapezoidal form and where the pseudo focal length photographing mode isselected, the height of such trapezoidal form is limited to therebylimit the aperture.

Further, construction may be made so that the codes printed in the filmcomprise magnetic codes which are memorized in a magnetic recordinglayer applied onto the film. The data printed as codes are not limitedto such photographed year, month and day as in the above embodiment.They may be data of hour, minute and second, photographic exposure data,and a consecutive number.

Further, although the above embodiment is constructed so that data areprinted outside the photographed frame in the film, the presentinvention is not limited thereto. A light shielding means for shieldingthe incidence of light from an object may be provided in a corner of oneframe photographed or in a predetermined region near the lower sidethereof, to thereby effect the shielding of light only when the pseudofocal length photographing mode is selected or at all times, and datamay be printed in the thus-shielded range.

Although the present invention has been fully described by way ofexample with reference to the accompanying drawings, it is to be notedhere that various changes and modifications will be apparent to thoseskilled in the art. Therefore, unless otherwise such changes andmodifications depart from the scope of the present invention, theyshould be construed as being included therein.

What is claimed is:
 1. A pseudo format camera comprising:manuallyoperated means; means for outputting a signal in response to theoperation of said manually operated means; a register whose content ischanged in response to the signal outputted by said outputting means;means for selecting, in accordance with the content of said register, areal focal length photographing mode in which a normal range in a frameof a film will be printed on a photographing paper and a pseudo focallength photographing mode in which a range narrower than the normalrange in a frame of the film will be printed on a photographing paper;first means, responsive to the content of the register, for displaying amark corresponding to the selected mode on the outer surface of thecamera; and second means, responsive to the content of the register, fordisplaying in a viewfinder of the camera, a photographing range whichwill be printed on the photographing paper.
 2. A pseudo format camera asclaimed in claim 1, wherein said second displaying means including meansfor displaying, in a finder field of the camera, a photographing rangewhich will be printed on the photographing paper.
 3. A pseudo formatcamera as claimed in claim 1, further comprising means for setting oneof a plurality of pseudo focal length photographing modes in which arange smaller than a normal range in a frame of the film will be printedon a photographing paper, the plurality of pseudo focal lengthphotographing modes being different in pseudo focal length from eachother, and wherein said first and second displaying means displayinformation about the magnification of the photographing mode selectedby said selecting means.
 4. A pseudo format camera having a real focallength photographing mode in which a normal range in a frame of a filmwill be printed on a photographing mode, a first pseudo focal lengthphotographing mode in which a first range narrower than the normal rangein a frame of the film will be printed on a photographing paper, and asecond pseudo focal length photographing mode in which a second rangenarrower than the first range in a frame of the film will be printed ona photographing paper, comprising;manually operated means; means foroutputting a signal in response to the operation of said manuallyoperated means; a register whose contents are changed in predeterminedorder in response to the signal outputted by said outputting means;means for selecting one of the photographing modes; first means,responsive to the content of the register, for displaying a markcorresponding to the selected mode on the outer surface of the camera;and second means, responsive to the content of the register, fordisplaying, in a viewfinder of the camera, a photographing range whichwill be printed on the photographing paper.
 5. A pseudo format camera asclaimed in claim 4, wherein said second displaying means including meansfor displaying, in a finder field of the camera, a photographing rangewhich will be printed on the photographing paper.